Concrete composition

Composition de béton

Betonzusammensetzung

Abstract

The invention relates to a concrete, comprising a hydraulic binder, water, an aggregate, a mineral admixture and a chemical admixture acting as a superplasticiser, characterized in that said mineral admixture comprises colloidal silica and one or more of kaolin clay, metakaolin clay and montmorillonite clay with a blain value in the range of from 2000 to 8000 cm 2 /g, preferably from 3000 to 7000 cm 2 /g, more preferably from 3300 to 6000 cm 2 /g, still more preferably from 4000 to 5000 cm 2 /g. The invention also relates to a method for obtaining such a concrete, comprising the steps of: (a) mixing the hydraulic binder and clay; (b) adding a part of the water, in an amount sufficient to obtain an adequately manageable mass; (c) mixing said chemical admixture with said mass obtained in (b); (d) adding and mixing the collidal silica and the rest of the water with the mixture obtained in step (c); (e) mixing in the aggregates; and (f) hardening the mixture.

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    RU-2584907-C1May 20, 2016Геннадий Геннадьевич ЛосевMethod of heat and moisture treatment of concrete articles